here is some text here is some text here is some text
\[
x^2
\]
here is some text here is some text here is some text \[ y=7x^2\] and more

some inline math $\frac{x}{2}+\mathcal{C}$ followed by

some old school displayed-math $$\frac{x}{2}+\mathcal{C}$$ followed by

here is some text here is some text here is some text
\[
x^2
\]
here is some text here is some text here is some text \[ y=7x^2\] and more

some inline math $\frac{x}{2}+\mathcal{C}$ followed by

some old school displayed-math $$\frac{x}{2}+\mathcal{C}$$ followed by
